1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 * Ceph - scalable distributed file system
6 * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
8 * This is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License version 2.1, as published by the Free Software
11 * Foundation. See file COPYING.
16 #ifndef CEPH_MOSDPGQUERY_H
17 #define CEPH_MOSDPGQUERY_H
19 #include "common/hobject.h"
20 #include "msg/Message.h"
23 * PGQuery - query another OSD as to the contents of their PGs
26 class MOSDPGQuery : public Message {
27 static const int HEAD_VERSION = 4;
28 static const int COMPAT_VERSION = 3;
33 version_t get_epoch() const { return epoch; }
34 map<spg_t, pg_query_t> pg_list;
36 MOSDPGQuery() : Message(MSG_OSD_PG_QUERY,
39 set_priority(CEPH_MSG_PRIO_HIGH);
41 MOSDPGQuery(epoch_t e, map<spg_t,pg_query_t>& ls) :
42 Message(MSG_OSD_PG_QUERY,
47 set_priority(CEPH_MSG_PRIO_HIGH);
50 ~MOSDPGQuery() override {}
53 const char *get_type_name() const override { return "pg_query"; }
54 void print(ostream& out) const override {
56 for (map<spg_t,pg_query_t>::const_iterator p = pg_list.begin();
57 p != pg_list.end(); ++p) {
58 if (p != pg_list.begin())
62 out << " epoch " << epoch << ")";
65 void encode_payload(uint64_t features) override {
66 if (HAVE_FEATURE(features, SERVER_LUMINOUS)) {
67 header.version = HEAD_VERSION;
69 // for kraken/jewel only
71 ::encode(epoch, payload);
72 vector<pair<pg_t, pg_query_t> > _pg_list;
73 _pg_list.reserve(pg_list.size());
74 vector<shard_id_t> _shard_list;
75 _shard_list.reserve(pg_list.size());
76 for (map<spg_t, pg_query_t>::iterator i = pg_list.begin();
79 _pg_list.push_back(make_pair(i->first.pgid, i->second));
80 _shard_list.push_back(i->first.shard);
82 ::encode(_pg_list, payload, features);
83 ::encode(_shard_list, payload);
86 ::encode(epoch, payload);
87 ::encode(pg_list, payload, features);
89 void decode_payload() override {
90 bufferlist::iterator p = payload.begin();
91 if (header.version < 4) {
92 // for kraken/jewel only
94 vector<pair<pg_t, pg_query_t> > _pg_list;
95 ::decode(_pg_list, p);
96 vector<shard_id_t> _shard_list(_pg_list.size(), shard_id_t::NO_SHARD);
98 ::decode(_shard_list, p);
99 assert(_pg_list.size() == _shard_list.size());
100 for (unsigned i = 0; i < _pg_list.size(); ++i) {
103 spg_t(_pg_list[i].first, _shard_list[i]), _pg_list[i].second));
108 ::decode(pg_list, p);